Cheap flights from Islip, NY to Seattle, WA

Travelers frequently search for route combinations, such as Islip and Atlanta, West Palm Beach, Orlando, Denver, New York, Las Vegas, Chicago, Miami, Los Angeles, Mexico City, Bogotá, Dallas, Phoenix, Philadelphia, San Francisco, Cancún, Houston, San Juan, Washington, D.C., Dhaka.

Travelers frequently search for route combinations, such as Seattle and London, Dublin, Manila, Bangkok, Tallinn, Detroit, New York, Manchester, Melbourne, Los Angeles, Chicago, Paris, Denver, Hong Kong, Washington, D.C., Toronto, Denpasar, Atlanta, Dallas, San Salvador.

The main airport in Islip is Long Island MacArthur. It is also served by Newark Liberty International, Philadelphia International, LaGuardia, Bradley International, New York Stewart International Airport, Atlantic City International, Lehigh Valley International, Long Island MacArthur, Trenton–Mercer, Wilkes-Barre/Scranton International.

The main airport in Seattle is Seattle–Tacoma International. It is also served by Vancouver International, Portland International, Abbotsford International, Bellingham International, Victoria Inner Harbour SPB, Paine Field Everett, Vancouver Harbour Flight Centre, Pangborn Memorial, Yakima Air Terminal.

Yes, it's possible to combine different modes of transport between Islip and Seattle thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between Islip and Seattle can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.

Virtual Interlining provides a revolutionary way of traveling. You can combine different modes of transport like flights, trains, and buses into one itinerary. And this often saves money. Thanks to the world's largest carrier database, the Kiwi.com search function enables anyone to mix and match different modes of transport easily.

Currently, you can fly between Islip and Seattle with Frontier Airlines, Alaska Airlines, Spirit Airlines, Harbour Air (Priv), Flair Airlines.

If you don’t have specific dates for your trip between Islip and Seattle, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between Islip and Seattle, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What's more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.